This is just a teaching post - about $Lever

From the perspective of 30M, in fact, before the market falls, the known expectation is to rebound and go short.

As shown in my theoretical chart on the right, the price has fallen below the original support, and the original support has become resistance. In the short term, before the price breaks through this resistance, it can only be expected to rebound. Every time the price falls to the resistance level, it is an opportunity to enter the short position.